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| Os | Win 9x/ME/2K/NT/XP |
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| License | Free |
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PC:Windows:Business:Spreadsheets
Views 1472 (+0) / Rating 2.50 / Free By
This Sun Position Calculator will aim the positioning of the bottom and top of the SunВґs rim, sunset and dayspring time at any geographical placement (characterized by observational height, latitude and longitude) at any date (between 1900- 2100) and time. SPC will also signal the crepuscle or when the Sun is not visible. A board with latitudes and longitudes, and GMT+ for some major cities about the humankind is incorporated.
The SunВґs positioning is characterized by the elevation fish relative to the horizon and azimuth relative to the North commission. Since the observed positioning of the Sun tin be effected by the refraction of the light rays in the atmosphere (especially for humble elevation angles), the curriculum gives both the real positioning of the Sun (without atmospheric refraction) and the observed elevation and azimuth (when atmospheric refraction is accounted). The same remarks are valid for sunset and dayspring time. Atmospheric refraction is taken into accounting in a more realistic manner, than in other available Sun Position Calculators. We compute the refraction corrections by using a Standard Atmosphere modeling. In rescript to overture a realistic atmosphere profile the curriculum needs as input the expected temperature and pressure for an arbitrary chosen altitude.
To apply and install SPC, download spc.speed and unzip it on your computer. The directory SPC will be created, with four files in it: "SPC.exe", "LatLonGMT.chm", "SPC.ini" and "SPCHelp.chm". The file "SPC.exe" is the executable, and the other three files are databases and texts used instantly by SPC.exe. "LatLonGMT.chm" is a database with Latitudes, Longitudes and GMT+ for some major cities and countries about he humankind, "SPCHelp.chm" is the help-file and "SPC.ini" is a file in which the curriculum remembers the last input parameters. The curriculum runs by launching "SPC.exe".
Authors: Sandor Volkan-Kacso and Zoltan Neda s.
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